Re: how to clean Stainless Steel
youre going to need to use some polish like Flitz to "buff" it off, you may be left with a dissimilar finish (shinier) afterwards and need to do the whole barrel. McGuires #50 cleaner wax has an additive in it that will remove light rust and is common in polishing marine metals, look for Collonites metal wax as well
Im assuming were talking about EXTERRIOR finishes here, dont be putting this stuff in the barrel...